. .. . .
n1 n2, . .
n1
n2
- ./ , , .
( ), n1 n2.
- , n1 n2 , , .
(dc ), (dc >> ), .
1014 1015 ( - ).
.18
1. , .
n1 > n2
2. .
, .
= Ө
Ө . . < Ө , .
Sin Ө =
, ,
, (- ), ,.. . . .
NA = n0 Sin Өa =
Ө, Өa;
3. , n1; n2
V =
3. . .
f0 = ; =
Pnm , ;
;
d .
n ;
m .
() Pnm
Eo1 = 2,405; HE12 = 3,83; HE21 = 2,406; EH21 = 5,136
fo .
|
|
.
N =
= 0,8 1,6
dc 5-8
dc 50 .
: , , , , .
.19
)
)